MySQL View Character Set for Table

Here: http://stackoverflow.com/questions/1049728/how-do-i-see-what-character-set-a-database-table-column-is-in-mysql

Apache POI List of Supported Spreadsheet Formulas

It's a little outdated (2012) but serves as a good guide for the most part:

• https://poi.apache.org/spreadsheet/eval-devguide.html

Git Undo Uncommitted Fast Forward Merges

This can only happen when there are conflicts. Fast forward merges are otherwise auto-committed.

git merge --abort

Reference: http://stackoverflow.com/questions/5741407/how-to-undo-a-git-merge-with-conflicts